When I was contemplating the Geo Correction (i actually had a set, but I never installed em), talking about the install is what scared me off. There is quite a bit to it, and its really not any less work (on the axle, anyway) than the Midarm. It also doesn't fix anything in the front end.I have my moments!
Your last sentence is really what it's coming down to for me - I guess right now I'm at the "will I notice the benefit" crossroad. It's getting warmer outside so hopefully we'll be planning a trip out to Rausch Creek soon. From the people I have talked to who've done a lot of wheeling in PA, NJ, WV, and MD, it is generally agreed that Rausch Creek is the "yardstick" that most of the other trails are rated against and there doesn't appear to be a lot of stuff to climb (hill climbs yes, rocks/ledges not so much).
So with that, if the geo brackets you were using were providing a measurable increase in performance (not necessarily the best in class performance) and stability, the price, speed and ease of install are hard to pass up. That said, the Savvy mid-arm is still the top contender for me, though it may get delayed until I eventually bite the bullet and get a truck to tow the LJ around to more exciting locations
That being said, I never ran it, so I'm only relating things that others have told me.